37AHA SERIES
HYDRONIC AIR HANDLER
SIZES 045 THRU 090
Training Manual
The Rinnai Tankless Heating System ................... 2
Installation Codes and Standards ......................... 2
Model Number Nomenclature................................ 3
Features............................................................. 4, 5
Performance Specification Summary.................... 6
Inside the Hydronic Air Handler............................. 6
Basic Sequence of Operation........................... 7-10
Specifications ...................................................... 11
Installation Configurations ............................. 12, 13
Multi-Position Orientation .............................. 14, 15
Suspended Cabinet Installation........................... 16
Duct Connections / Air Distribution Ductwork...... 17
Plumbing.............................................................. 18
Accessories .................................................... 19-25
Electrical Connections......................................... 26
Dip Switch Options .............................................. 27
Purging and Priming the System......................... 28
Maintenance........................................................ 29
Troubleshooting................................................... 30
Warranty .............................................................. 31
Sample Installation .............................................. 32
Rinnai Tankless Water Heater Sizing............ 33, 34
Sizing Example.................................................... 35
Parts List........................................................ 36, 37
Product Knowledge Test ..................................... 38
The Rinnai Hydronic Air Handler
(A key component of the Rinnai
Tankless Heating System)
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